Pump.



F. C. CROWE.

PUMP.

APPLICATION FILED SEPT. 9. 1915.

1,227,896 Patented. May 29, 1917.]

2 3HEETS-SHEET I.

Figi.

F. C. CROWE.

PUMP.

APPLICATION FILED SEPT. 9, I9I5. 1,227,89@.,- Patented May 29,1917.

2 SHEETS-SHEET 2.

Frwdwvlclv Q C: '0 we wsdw FREDERICK C. CRUWE, 0F NORTH YAKIIVIA, WASHINGTON.

Specification of Letters Patent.

Patented May 29, 1917.

Application filed September 9, 1915. Serial No. 49,696.

To all whom it may concern: I

Be it known that I, FREDERICK C. Cnown, a citizen of the United States, and resident 01' North Yakima, in the county of Yakima and State of lVashington, have invented certain new and useful Improvements in Pumps, of which the following is a speciiication.

My invention relates to pumps and consists of a pump employing a piston plate pivoted at one edge and oscillating in a cyl-' inder or pump chamber of sector shaped cross section.

The object of my invention is to produce a pump of this type of improved design and eiliciency.

The novel features of my invention will be defined by the claims terminating this specification.

In the accompanying drawings I have shown my invention in the form of construction which is now preferred by me.

Figure 1 is a side view of the pump and its pipe connections.

Fig. 2 is a sectional side view of the pump taken in a plane at right angles to that of Fig. 1.

Fig. 3 is a top view.

4 is a section taken on the line of Fig. 2.

Fig. 5 is a section through the upper delivery pipe, or on line 55 of Fig. 2.

Fig. 6 is a section of an edge of the piston plate showing the type of packing employed.

The preferred construction of my devlce, as shown, in the accompanying drawings, is as follows.

The pump cylinder or pumping chamber 1, is formed by two diverging planes 10, 11, which meet to form an apex, side walls 13, 13, and an arcuate wall 14. At the apex of this chamber is an enlargement which snugly fits over the pivot axis 20 of the 0s cillating piston plate 2.

This pivot axis has a groove 21, extending along one side, into which fits the edge of the piston plate 2. The two may be secured together in any desired manner. The opposite end of the plate contacts with the areaate plate 14 of the casing. It also has an actuating rod 3 pivoted thereto, as by ears 22 and a pin 23.

Each of the sides, 10 and 11 of the pump chamber or casing, has an inlet port 4, controlled by an inwardly opening valve 40.

The type of valve construction to be employed is immaterial. lVhere the pump is operated submerged, no casing surrounding these valves is necessary. For other occasions, chambers 11 may inclose the valves and these be connected by conduit l2 and to a suction pipe Upon the same sides 10 and 11, are the discharge ports l5, 16, these being well toward the curved end of the chamber. These are connected with a discharge pipe 5, in any suitable manner. Such connection from the lower port 16 is shown as through elbow 50, check valve 51, elbow 52 and pipe 53 to a cross connection 54: which connects with pipe through elbow 58. From the other port 15 the connection is through pipe 56, special elbow 57 and check valve to the cross-connection 54-. An air chamber 59 is also connected with the cross-connection The section 56 of the discharge pipe forms, or carries, guides for the cross head 6. These guides may be bars 60 secured to the pipe, the guides and the crosshead being shaped to form suitable engaging surfaces, as by grooving one to embrace a rib of the other.

The piston actuating rod 3 connects the cross head 6 and the piston plate 2. A rod 7, secured to the cross head, passes through a gland or stuliing box at 7 0 and is connected with a rod 71, or other suitable means for giving it reciprocating movement. A cross.

head 80 forms the means for connecting rods 7 and 71, and slides on guides, as the bars 8.

The two side edges and the outer or swinging edge of the piston plate 2 are provided with packing means for securing tight joints. The plate has grooves 24 along these edges in which the packing parts are placed. The packing as shown consists of metal bars 26 and strips 27 of any suitable packing material. Springs 25 spaced at suitable intervals within sockets, hold plates 26 outwardly.

The position of attachment of the actuating rod 3 to the plate and the transmission of the power through the discharge pipe 56, applies the power directly to the load and employs a type of packing which is well understood and which can be easily kept in good condition.

lVhat I claim as my invention and desire to patent is:

1. A pump comprising a sector-shaped cylinder having inlet ports on its radial faces toward the apex of the sector, and discharge ports on the same faces toward the peripheral end thereof, a piston plate Within and pivoted at the apex of the cylinder, and a piston actuating member pivoted upon the piston and freely reciprocable through one of the discharge ports.

2. A pump comprising a sector-shaped cylinder having inlet ports on the radial faces toward the apex of the sector and discharge ports on the same faces toward the peripheral end thereof, a piston plate within and pivoted at the apex of the cylinder, a discharge pipe connected with one discharge port and extending in a direction substantially paralleling a chord of the arc inclosed by the cylinder, a cross-head guided within said discharge pipe, a rod pivoted to the piston plate and to said cross-head, and reciprocable freely through said discharge opening, anda piston rod secured to the cross-head and extending outside of the dis charge pipe.

A pump comprising a casing or cylinder having a sector shape in cross section with a pivot chamber of circular cross section concentric its apex, a pivot shaft seated in said pivot chamber and having a longitudinal groove, a piston plate having one edge seated in the groove of said shaft, and means for actuative connection with the opposite end of the piston plate.

L. A pump comprising a casing or cylinder having a sector shape in cross section with a pivot chamber of circular cross section concentric its apex, a pivot shaft seated in said pivot chamber and having a long1.-'

tudinal groove, a piston plate having one edge seated in the groove of said shaft, one side of the casing having a discharge opening toward the swinging end of the piston plate, and means for actuative connection with the opposite end of the piston plate.

Signed at North Yakima, VVashington, this 2nd day of September, 1915.

FREDERICK C. CROlVE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

